Window regulator



p 1933- E. L. ACKERMAN ET AL 1,925,735

WINDOW REGULATOR Filed June 19, 1930 2 Sheets-Sheet 1 ATTORNEY.

Se t. 5, 1933. E. ACKERMAN ET AL 1,925,735

WINDOW REGULATOR Filed June 19. 1950 2 Sheets-Sheet 2 A if A TTORNE Y.

Patented Sept. 5, 1933 UNITED STATES 1,925,785 WINDOW REGULATOR.-

Edward L. Ackerman and Alois J. Zwierzina, Detroit, Mich, assignors toAckerman-Blaesser- Fezzey, Inc., Detroit, Mich., a corporation ofMichigan Application June 19, 1930. Serial No. 462,346 40mins. (01.268-126) This invention relates to window regulators and the object ofthe invention is to provide a regulator for raising and loweringthe-windows of an automobile body and arranged to lift the window from adetermined point preferably past the center of the lower edge.

Another object of the invention is to provide a lifting arm pivotallyconnected at one end to the window and at the opposite end to a swingingarm, the raising and lowering means being pivotally connected and anactuating arm -.piv-,

otally connected to the lifting arm adjacent the swinging arm and gearoperated means for raising and lowering the actuating arm. I

Another object of the invention is to provide a device of the characterdescribed which will firmly supportthe window at any position and. whichis compact in form and may :be readily installed in a relatively smallspace. I

These objects and the several novel features of the invention arehereinafter more fully described and claimed and thepreferred form ofconstruction by which these objects are attained is shown in theaccompanying drawings inwhich- Fig. 1 is an elevation of a windowregulator embodying our invention.

Fig. 2 isa view taken from the bottom of Fig. 1. Fig. 3 is a sectiontaken on line 3'3 of Fig. 1. Fig. 4 is a section taken on line 4-4ofFig. 1. Fig. 5 is a front elevation of an alternative form of thedevice. v

a Fig. 6 is a side elevation thereof.

As shown in Figs. 1 and 2 a sheet metal plate 1 is provided which isadapted to be attached by means of the screw holes'2 to a frame memberbeneath the window opening. A housing 3 is secured to the plate 1 and ashaft 4 is rotatably mounted therein to which a crank may be attachedforrotating the said shaft. Within'the housing 3 is a gear 5 adapted tobe rotated by the shaft 4 and the lower flan e of the housing 3 isprovided with a raised portion 6 through which the edge of the gear 5extends into'mesh-with the large gear 7. The plate 1 is formed toprovide a vertical channel 8 having a depression 5 9 extending from oneside thereof. Within this depression is a pinion 10 which is secured toturn with the large gear I. Movable vertically in the channel 8 is agear rack 11 which meshes with the pinion 10. The channel 8 is providedwith a slot 12 opening through the bottom thereof anda pin 13 is securedin the rack 11 and extends through the slot 12. An actuating arm 14 ispivotally mounted on the pin 13 and at the lower end carries a pin 15secured thereto which extends through an aperture provided therefor inthe lifting arm 16.

The pin 15 which is secured to the arm 14'is provided with a slot asshown in Fig. 1 to receive the end of a flat helical spring 17 which ispro vided with an end 18 engaging about a pin 19 mounted in the liftingarm 16. A swinging arm 20 is pivotally mounted on the plate 1 at 21 andthis arm is provided with a pin 22 extending through an arcuate slot 23in the plate 1 which limits swinging movement of said arm 20. At thelower end, the swinging arm 20 is pivotally connected to the end of thelifting arm 16 at 24, and-the opposite'end of the lifting arm 16 ispivotally connected at 25 to a bracket 26 which is secured to the windowsash 27'directly beneath the center of the window. This arrangementprovides a pivot point for the lifting arm that is fixed relative to thesash and the lifting arm therefore constantly applies the push vor pullforce at the mechanically correct point and thus avoids a tendency oftilting of the sash in its frame and consequent binding thereof in theoperation of raising or lowering the sash.

The operation of the device will be understood more particularlyfromFig. 1. From this view, it will be noted that counter-clockwiserotation of the shaft 4,and gear 5 will produce clockwise rotation ofthe gear 7 and pinion 10 thus'moving the gear track 11 downwardlyand'moving the pivot 13 of the arm 14 from position 1a to position 2a.This movement moves the lower end of the arm 14 from position 11) toposition 2b. This movement of the arm 14 also moves the pivot 24 of theswinging arm 20 from position 10 to position 20 and moves :the lifting.end of the lifting arm 16 from position 1d to position 2d thus lower ingthe sash 2'7 and window mounted therein.

To raise the window, the shaft 4 and gear 5 are rotated in a clockwisedirection thus rotating the gear 7 and pinion 10 in a counter-clockwisedirection to raise the rack 11. The pivot points of the several armswill then be moved back through positions 1a, 1b, 1c and 1d to positions3a, 3b, 3c and 3d in which position the window is closed. This clockwiserotation of the shaft 4 and gear 5 may be continued to move the pivotwindow and this spring being under tension assists in raising thelifting arm and window as the window is moved upwardly. The housing 3for the shaft 4 and gear; 5 preferably contains.

a clutch mechanism for holding the gear 5 at any adjustment upon releaseof the crank whichv is attached to the shaft 4. This clutch mechanismmay be constructed as shown and described in detail in the U. S. PatentNo. 1,657,561, issued January 31, 1928 but is not here shown as it isnot absolutely essential to the operation of this device.

Analternative form of the device is'shown in Figs. 5 and 6 and comprisesa plate 30 having a casing 3 secured thereto in which a shaft 4 and gear5 is rotatably mounted. The gear 5 meshes with a large gear 31 to whicha small gear 32 is secured.

The gear 32 meshes with the large gear 33 'whichcarries a pin 34 andwhich is rotatably mounted in the plate 30. The pin '34 extends throughthe plate 30 and is slotted to receive the end 35 of a helical spring 36and a stationary pin 3'7 is mounted on the plate as and the opposite endof the spring 36 is secured to said pin 3'7. The spring 36 resistsrotation of the gear 33 in a clockwise direction and assists rotation ofthe gear 33 in a counter-clockwise direction. The

gear 33 is provided with teeth through about one-half of itscircumference and on the side of the gear opposite the teeth a lug 38 isprovided to which the arm 1 l is secured. The arm 14 is substantiallythe same as the arm 14 shown in Fig. 1 and is pivotally connected at thelower end to the lifting arm 16. Thearm 20 is also the same as the arm20 shown in Fig. l and is provided with a pin 22 riding in the arcuateslot 23 in the plate 30. In this form of the device, the gear 33 may beturned through a half-circle to move the pivot point of the arm 14 inthe lug 38 to positions la, 2a, 3a and 4a which produces substantiallythe same movements of the arms 14, 16 and 20 as the gear rack 11shown'in Fig.

1. The essential difierences between the device shown in Fig. 5 andthatshown in Fig. 1 is that the gear 33 is substituted for the gear rack 11shown in Fig. 1 and the spring 36'assists in countier-clockwise movementof the gear 33 to raise the arms 14 and 16 and resists clockwisemovement of the gear 33 to lower the arms 14 and 16.

From the foregoing description it becomes evident that the device isvery simple and efiicient in operation, will not easily get out oforder, is 1 composed of few parts and is of consequent low manufacturingcost and provides a devicewhich accomplishes the objects described.

actuating arm pivotally mounted on said pivot pin, a swinging armpivotally mounted on the plate, a lifting arm pivoted in the other endof the swinging arm and adapted for pivotal con- :nection with a windowsash, the other end of the actuating arm being pivotally connected tothe lifting arm adjacent its pivotal connection with the swinging arm,crank operated means for moving the gear rack longitudinally of theohannel in either direction, and yieldable means resisting downwardmovement of the lifting arm by the actuating arm, said yieldable meansassisting in upward movement of the lifting arm by the actuating arm.

2. In a window regulator, a sheet metal plate, an arm pivotally mountedon the plate to swing through a limited arc, a lifting arm pivotallyconnected to the end of the swinging arm, the other end of the liftingarm being adapted for pivotal connection with a window sash, anactuating arm pivotally connected to the lifting arm adjacent theswinging arm, the plate being formed to provide a vertical channel, agear rack movable longitudinally in said channel, the'actuating armbeing pivotally mounted on the gear rack, and a'crank operated gearmechanismfor moving the gear rack longitudinally in either direction.

3.'In a window regulator, a plate, an arm pivotally mounted on the plateto swing through a limited are, a lifting arm pivotally connected 'tothe end of the swinging arm, the other end of the lifting arm beingvpivotally connected to a window sash, an actuating arm pivoted at oneend to the lifting arm, a gear rack movable verholding the rack to moveit in a straight line, and a gear mechanism for raising and lowering thegear rack.

tically on the plate, the other end of the actu- 'ating arm beingpivoted to said rack, means for 4. Ina window regulatorfa plate havingan arcuate slot, an arm pivoted to swing on the plate and having a pinriding in the slot, a lifting arm having one end pivotally connected tothe end of the pivoted arm, the other end being line to which the otherend of the actuating arm is pivoted, and a fixedly positioned gear formoving the rack to raise or lower the actuating arm.

